Koun Banega Karodpati question

 This question was asked on Koun Banega Karodpati program last week by Amitabh Bachchan.

Question 

What is the 100th day of the year ????

Answer 

Don't go in search of the calendar to calculate 100 days from number 1 as I did !!!

This calculation can be done in the mind. 

I will explain  how...... 

Take the year as a non leap year. 

There are 31 days in the month of January. 

There are 28 days in the month of February. 

There are 31 days in the month of March. 

By adding these 3, we get

31    +     28      +      31      =      90

So we have got 90 days at the end of March month. 

Question was asked for 100 days. 

So in the month of April, 10 more days are required. 

That means 100th day of the year is        April 10.

If the year is a leap year, then 100th day is      April   11.